Application of Resistive Bolometer to Measurement of X‐Ray Radiation from Laser Plasmas

A metal resistor thin‐film bolometer was fabricated using the micro lithographic method and then applied to measurement of x‐ray emission from gas‐puff targets in the experiments at 1‐kJ PALS laser in Prague. The detection head with the bolometer is equipped with a precise system for its calibration. The bolometer is of 4‐μm Au capturing layer and 100 % efficiency up to 5 keV. The lowest measurable flux is 5×10−9 J/cm2.